{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>栅格使用</title>
    <!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"
          integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">

    <!-- 可选的 Bootstrap 主题文件（一般不用引入） -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap-theme.min.css"
          integrity="sha384-6pzBo3FDv/PJ8r2KRkGHifhEocL+1X2rVCTTkUfGk7/0pbek5mMa1upzvWbrUbOZ" crossorigin="anonymous">

    <!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"
            integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd"
            crossorigin="anonymous"></script>
    <link rel="stylesheet" type="text/css" href="{% static 'mycss.css' %}"/>
    <style type="text/css">
        .head {
            text-align: center;
            width: 100%;
            height: 100px;
            border: 1px solid;
            background: greenyellow;
        }
    </style>
</head>
<body>
<div class="head">
    <h1>图书管理系统</h1>
</div>
<div class="content">
    <div class="col-md-8">.col-md-8</div>
    <div class="col-md-4">.col-md-4</div>
</div>
<div class="footer">
    我是 脚
</div>
</body>
</html>